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Gas Powered Thoughts Advice for Gas Helicopter Success from Carey Shurley


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  • 7 Post By carey shurley
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Old 05-18-2020, 02:17 PM   #1 (permalink)
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Default GPH/OBR 310 Engine



Introducing the latest in gas powered helicopter engines, the GPH/OBR 310 engine

Gas Powered Helicopters has partnered with O’Neill Brothers Racing to add to our helicopter engine offerings.



Based on the Zenoah RC engine format, the GPH/OBR 310 is the result of over 6 months of development and testing and combines the helicopter knowledge of Gas Powered Helicopters with the extensive engine building experience of O’Neill Brothers Racing

Here are some of the features:
  • CNC aluminum crankcase – 3 piece - new lighter version
  • CNC cylinder porting
  • CNC piston modifications
  • CNC crankshaft modifications
  • Custom transfer port design for increased power
  • Custom fan cover
  • Includes clutch with machine trued base
  • Front and rear case seals
  • Special break-in oil included as well as extensive break-in/running instructions

Fan housing cover has a drilled design which prevents most objects from falling into the fan. If you’ve ever dropped a nut/bolt and have it captured by the flywheel magnets, you’ll really appreciate this feature



Includes Walbro WT-990 carburetor (the standard for the 3xx class engines) as well as an aluminum isolator block and high volume air filter.




Continuing the GPH tradition of high performance engines, the GPH/OBR310 has broad power delivery suitable for a wide variety of drive ratio ranges. As compared to the Hanson 300 engine you can see a dramatic power difference



Critical to helicopter operation is how smoothly its engine runs. A great deal of effort was made to ensure that the GPH/OBR310 exceeds expectations for smooth operation. Here you can see how the engines vibration level compares to that of the Hanson 300 which is generally considered a very smooth running engine.



The GPH/OBR 310 will add yet another option to high performance engines for your gas powered helicopter


Last edited by carey shurley; 05-25-2020 at 05:21 PM..
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Old 05-18-2020, 03:08 PM   #2 (permalink)
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Looks really nice, how does it compare to the TRM 310 that you've been selling?
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Old 05-18-2020, 09:20 PM   #3 (permalink)
 

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Default will the GPH/OBR 310 fit Blackout G700Z v2 conversion?

Hi Carey

The new engine looks awesome.

I ordered the G700Z v2 (Align 700e conversion to gasser kit) from Dennis of Blackoutmods, will your new engine fit this kit ?
If it does, when will it be available and what is the cost ? Also,
How is the weight of the GPH/OBR 310 compare to the Hanson 300 rc 3d max?

Cheers
David
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Old 05-18-2020, 11:24 PM   #4 (permalink)
 

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Default new engine

Hi Carey

Sorry i was too excited seeing the new engine and i miss your info on the engine availability.

Dave
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Old 05-19-2020, 02:14 PM   #5 (permalink)
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As about the fitting.

Yes!

For the other info, Carey will respond soon.

BR
Dennis
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Old 05-19-2020, 09:48 PM   #6 (permalink)
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I'll have the first run in a couple of weeks.
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Old 05-20-2020, 10:50 AM   #7 (permalink)
 

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Default response to Dennis(Blackoutmods)

Hi Dennis

As always, you never disappoint on support...

Cheers
Dave
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Old 05-22-2020, 03:04 PM   #8 (permalink)
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Interesting... O'neill Brothers has come up in the gasser room in the past and they where heavily criticized for "inflating the numbers" on power. i.e. this and especially this. Whats Changed?




Also, can you post those power charts with the scale visible, and give us all the operating conditions of the test (weather conditions at test time, fuel, exhaust, test equipment, etc) ? Without numbers we have no idea what we are looking at. The difference could be significant... or it could be tiny if you are using a zoomed in scale like financial charts do.
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Old 05-23-2020, 09:20 AM   #9 (permalink)
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all tests that I publish are done on my own dyno platform. For those who are new here, it was shown HERE

weather conditions are included in the correction factor as the platform measures temp/humidity real time. I have validated its accuracy by testing the same engines under various weather conditions and found no significant difference in the power graphs.

the 310's simply make more power than the 300's however the real value of the graph is to depict where the power is so that pilots can gear for or set head speeds for the best results. As I've said before I'm not going to get in the middle of the giant pissing match that history has proven will occur if I publish the actual HP numbers.
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Old 05-25-2020, 07:34 PM   #10 (permalink)
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Quote:
Originally Posted by jharkin View Post
Also, can you post those power charts with the scale visible, and give us all the operating conditions of the test (weather conditions at test time, fuel, exhaust, test equipment, etc) ? Without numbers we have no idea what we are looking at. The difference could be significant... or it could be tiny if you are using a zoomed in scale like financial charts do.

He won't, people have been terrible and now we can't have nice things because of that.
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Old 08-05-2020, 08:23 PM   #11 (permalink)
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Any video of the OBR 310 flying?
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